Modular on Simon Juhl

ATtiny85 Based Sampler

Wed, 22 May 2024 10:22:19 +0000

This project combined two objectives. The first was to create an ATtiny85-based sampler that plays small random sections of a chirp sample, designed for use in a modular system. This is useful for rhythmic synth percussion or sound effects. The second part of the project involved designing a PCB that accommodates all components on one side of the board, with holes for mounting the panel in a Eurorack modular system, integrating both the PCB and front panel.

Source code and schematics for the project can be found on GitHub.

ATtiny85 envelope module

Thu, 02 Apr 2020 18:09:51 +0000

Decay-envelope-module based on a single ATTiny85 microcontroller with multiple outputs based on triggering.

Features:

Gate signal for when the envelope is active
Rising edge trigger output
Decay/release length
Digital envelope output

SOURCECODE

Clock multiplier

Tue, 24 Mar 2020 13:39:14 +0000

This is a clock multiplier made for musical purpose, such as synthesizer/modular-systems or other things that would send out or receive 5v pulses. The current code is written for a ATTiny85, but should work fine on any Arduino etc.

The program measures the time between each pulse input, and outputs a repeating pulse with an interval defined by the variable ‘mult’. There are 3 more inputs/outputs avalible if using and ATTiny85 these are currently used for changing mult, but could be replaced by an potentiometer for a wider range of tempos.

I have uploaded the code for the microcontroller to Github: HERE

TimeStep Sequencer

Mon, 16 Mar 2020 13:37:48 +0000

This is a sequencer made for controlling modular systems. It has 8 knobs controlling the time/length of each step and 8 knobs controlling the CV output for each step, generating interesting rhythmic patterns. The sequencer has a random mode, start/stop, two time-multipliers and a slide switch.

The sequencer is based on a teensy 2.0 source code can be found here

Noise Toolbox

Tue, 21 Jan 2020 21:09:25 +0000

This is a modular synthesizer build with focus on noise music or non-musical purpose. Using different effects, filters distortion etc. weird noise can be generated through feedback loops or external input.

Overview

The unit contains the following modules:

3 delay modules
3 distortion/wavefolds
2 tone controls
1 dual equalizer
1 3×3 matrix mixer
1 oscilator/LFO
1 VCO module
1 external instrument input
1 digital noise module
2 resonance filters
2 mults
2 mixes
1 mixer for output